Display apparatus and switch-off drive method therefor

a technology of switch-off drive and display apparatus, which is applied in the field of display, can solve the problem of not being able to ensure that residual charges will be completely eliminated, and achieve the effect of improving product quality

Inactive Publication Date: 2020-01-09
HKC CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent aims to solve the issue of switch-off ghost images in display apparatuses by adding a control switch that can rapidly drop the co-electrode voltage to a 0 potential after switch-off. This improves the product quality and eliminates the possibility of switch-off ghost images.

Problems solved by technology

Due to the limitation of the liquid crystal charging and discharging speed, some residual charges may remain on a liquid crystal panel during switch-off.
However, at this time, because an output of a data driver is not determined, the discharging effect will vary depending on image display data.
Therefore, this method cannot ensure that the residual charges will be completely eliminated.

Method used

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  • Display apparatus and switch-off drive method therefor
  • Display apparatus and switch-off drive method therefor
  • Display apparatus and switch-off drive method therefor

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Embodiment Construction

[0028]The following embodiments are described with reference to the accompanying drawings, used to exemplify specific embodiments for implementation of this application. Terms about directions mentioned in this application, such as “on”, “below”, “front”, “back”, “left”, “right”, “in”, “out”, and “side surface” merely refer to directions in the accompanying drawings. Therefore, the used terms about directions are used to describe and understand this application, and are not intended to limit this application.

[0029]The accompanying drawings and the description are considered to be essentially exemplary, rather than limitative. In the figures, modules with similar structures are represented by using the same reference number. In addition, for understanding and ease of description, the size and the thickness of each component shown in the accompanying drawings are arbitrarily shown, but this application is not limited thereto.

[0030]In the accompanying drawings, for clarity, thicknesses...

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Abstract

This application provides a display apparatus and a switch-off drive method therefor. The display apparatus includes: a display panel, including: at least one scanning line; at least one data line, crossed with the scanning line; at least one active switch, connected to the scanning line and the data line; a common electrode, disposed on the display panel and connected to the active switch, where the common electrode has a co-electrode voltage; and a control component, including one or more control switches, where a first end of the control switch is coupled to the common electrode, a second end of the control switch is coupled to a discharge module, and a control end of the control switch is coupled to a switching voltage, where a status of the control switch is adjusted by using a voltage difference between the switching voltage and the co-electrode voltage.

Description

BACKGROUNDTechnical Field[0001]This application relates to the display field, and in particular, to a display apparatus and a switch-off drive method therefor.Related Art[0002]The liquid crystal display (LCD) has been widely used in recent years. With the improvement of the driving technology, the LCD has the advantages of low power consumption, low voltage driving, and the like, and at present, has been widely applied to camcorders, notebook computers, desktop display apparatuses, and various projection devices.[0003]In addition, an LCD usually includes a gate driver circuit, a source driver circuit, and a pixel array. The pixel array includes a plurality of pixel circuits. Each pixel circuit is switched on or off according to a scanning signal provided by the gate driver circuit, and a corresponding image is presented based on a data signal provided by the source driver circuit.[0004]Due to the limitation of the liquid crystal charging and discharging speed, some residual charges ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): G09G3/36G02F1/1362
CPCG09G2330/027G02F1/136286G09G3/3655G09G3/3648G09G3/3659
InventorFU, WEI
OwnerHKC CORP LTD